Related articles

Speaking to ITV’s Good Morning Britain, he said: “He’s a very anti-British American president, he always has been.”

Mr Farage also argued the US would never consider handing over power to foreign judges in exchange for a trade deal, similar to the way Britain’s laws are able to be overturned by the European Court of Justice.

He added: “If we said to the American people, ‘I tell you what, you are part of this thing called NAFTA [North American Free Trade Agreement], why don’t you move your supreme court from Washington down into Mexico somewhere?’

“See what the reaction of the American people would be - they’d be horrified.

“So I don’t think what Obama says will make any different to public opinion at all.”

He’s a very anti-British American president, he always has been

Nigel Farage

Mayor of London Boris Johnson, another leading Brexit campaigner, has also attacked Mr Obama over his “outrageous and exorbitant hypocrisy” in preparing to interfere in the EU referendum campaign.

During his TV appearance, Mr Farage also repeated his warning over Turkey being allowed to join the EU.

This week EU leaders will meet to discuss a draft deal for Turkey to have its EU membership fast-tracked and given new visa rights across the continent.

In exchange, Brussels has demanded Turkey take greater action to stem the flow of refugees crossing its borders into Europe.

Mr Farage said: “My big worry with Turkey is there’s a summit on Thursday - Mr Cameron will be there - and we have been saying to Turkey that from June 77million of them can have visa-free travel to the Schengen Zone within the EU and there’s talk of fast-track membership.

“So if we vote to remain in the EU we will finish up in a political union with open borders with Turkey.”

The MEP was also quizzed about a recent row between Buckingham Palace and The Sun over whether the Queen supports Brexit.

The pros and cons of Brexit

The pros and cons of Brexit.

Downing Street today defended the right of foreign leaders to speak out in the EU referendum debate.

The Prime Minister's official spokeswoman said: "The PM is focused on getting out and about around the country making the case for why we think it's in the UK's interest to stay in a reformed EU.

"He said when he was in France at the summit recently that lots of people are making their views known on this issue, including international leaders. These are people who wish Britain well and they are worth listening to.

"But because the Prime Minister is the one that has delivered on his promise of a referendum, it will be up to every person in this country to make up their own mind about whether Britain should remain or leave."

She added: "Other people will set out their views. The choice for the British people is whether or not they listen to them, but then they get to make up their own minds."

The spokeswoman declined to confirm or deny reports that Mr Obama may be paying a visit to the UK in April.